'B l1 l2' diaporamas de présentation

DBMS Storage and Indexing

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microsoft/billgates/speeches/SIGMOD98.asp

http://www.microsoft.com/billgates/speeches/SIGMOD98.asp. Homework V. V.1 Exercise 5.3: 2, 3, 6, 7, 8, 9, 10. V.2. Exercise 5.6: 9. (Extra Credit) Write a JDBC based program for querying some database. Reading Exercise: QBE (required)

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Storing Data: Disks and Files

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Buffer and File organization

Buffer and File organization. Review. DBMSs store data on disk Disk characteristics: 2 orders of magnitude slower than MM Unit of read/write operations a block/page (multiple of sectors) Access time = seek time + rotation time + transfer time Sequential I/O much faster than random I/O

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